STD Rates in Lancaster County, South Carolina

2023 CDC surveillance data for Lancaster County, South Carolina — chlamydia, gonorrhea, and syphilis rates with state comparisons.

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Data Year: 2023 Source: CDC STI Surveillance Population: 108,199
Combined
431.6
per 100K
46th / 46
Chlamydia
328.1
per 100K • 355 cases
Gonorrhea
98.9
per 100K • 107 cases
Syphilis P&S
4.6
per 100K • 5 cases

Lancaster County is among the lower-burden counties in South Carolina, reporting a combined STD rate of 431.6 per 100,000 residents in 2023 — 46th of 46 counties. Reported infections included chlamydia at 328.1 per 100,000 (355 cases, 46% below the state rate), gonorrhea at 98.9 per 100,000 (107 cases, 56% below the state rate), syphilis at 4.6 per 100,000 (5 cases, 73% below the state rate). Many STDs show no symptoms, so testing is the only reliable way to know your status. Confidential options are available across Lancaster County.

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Lancaster County vs South Carolina Average

Infection Lancaster County South Carolina Rate Difference
Chlamydia 328.1 612.1 46% below
Gonorrhea 98.9 222.4 56% below
Syphilis (P&S) 4.6 17.3 73% below

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Largest cities in Lancaster County, South Carolina

Largest first, by Census population. Each city page lists nearby clinics, free and low-cost testing, and labs.

STD testing in Lancaster, SC8,921 people → STD testing in Kershaw, SC2,259 people →

Largest Counties in South Carolina

Greenville County → Richland County → Charleston County → Horry County → Spartanburg County → Lexington County → York County → Berkeley County → Anderson County → Beaufort County →

All 46 South Carolina counties → STD testing in South Carolina →

FAQs

Lancaster County ranks 46th of 46 South Carolina counties for combined STD rate in 2023, at 431.6 per 100,000 residents.
In 2023, chlamydia was the most frequently reported STD in Lancaster County, with 355 cases at a rate of 328.1 per 100,000 residents.
STDTest.com lists confidential testing locations across Lancaster County and South Carolina. Many offer same-day appointments with results in 1–3 days.

Related Resources

STD Testing Window Periods How Soon After Sex to Test STD Symptoms Guide Testing Timeline Chart All Testing Clinics STD Statistics and Data
Data sourced from the CDC's annual STI Surveillance Report. Rates are per 100,000 population and reflect reported cases only — actual prevalence is likely higher due to undiagnosed infections. While we strive for accuracy, STDTest.com makes no representations or warranties regarding the completeness or accuracy of this data and is not responsible for any errors or omissions. This page is for informational purposes only and does not constitute medical advice.
Sources